Mitsubishi Electric FR-A700 Instruction Manual page 471

Parameter
MRS signal logic inversion (Pr. 17 = 2)
When Pr. 17 is set to "2", the MRS signal (output stop) can be changed to the normally closed
(NC contact) input specification. When the MRS signal turns on (opens), the inverter shuts off
the output.
Pr. 17 = 0
Assign a different action for each MRS signal input from communication and external
terminal (Pr. 17 = 4)
When Pr. 17 is set to "4", the MRS signal from external terminal (output stop) can be changed
to the normally closed (NC contact) input, and the MRS signal from communication can be
changed to the normally open (NO contact) input.
This function is useful to perform operation by communication with MRS signal from external ter-
minal remained on.
External MRS
Tab. 6-83: Output shutoff by external terminal or communication
NOTES The MRS signal is assigned to the terminal MRS in the initial setting. By setting "24" in any
of Pr. 178 to Pr. 189 "Input terminal function selection", the RT signal can be assigned to the
other terminal.
The MRS signal can shut off the output, independently of the PU, external or network opera-
tion mode.
Changing the terminal assignment using Pr. 178 to Pr. 189 "Input terminal function
selection" may affect the other functions. Please make setting after confirming the function of
each terminal.
FR-A700 EC
Pr. 17 = 2
MRS
PC
Communication
MRS
OFF OFF
OFF ON
ON OFF
ON ON
Function assignment of external terminals
Fig. 6-124:
Connection of the MRS terminal in source
logic
MRS
PC
0
Operation enabled
Output shutoff
Output shutoff
Output shutoff
Pr. 17 Setting
2
Output shutoff Output shutoff
Output shutoff Output shutoff
Output shutoff Operation enabled
Operation enabled Output shutoff
I000011C
4
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